CodeBuddy

What it does

Do you have a LeetCode study group for accountability? CodeBuddy turns your solo sessions into a multiplayer experience. Install the Chrome extension to livestream your code and test cases, get instant feedback from friends, and help others debug — all directly inside LeetCode.

• 
  LeetBuddy2025 · chromewebstore.google.com · ▲11

  AI help, whiteboard, & history - right on LeetCode

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  Online coding interview platform for professionals

• 
  Openleetcode – Local LeetCode runner where tests live in the repoAug 2026 · github.com · ▲73

  You write a standard solution, just like on LeetCode, and run it through the CLI. It identifies the problem by ID or title, executes your code against local test cases, and shows the result. It currently supports around 1.4k problems and multiple languages, including Python, C++, Rust, Java, Go, TypeScript, Swift, and others. The project is still an MVP. System design, SQL, and concurrency problems are not supported yet, but support for more problem types is planned. Made in Haskell!

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• 
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  The LeetCode buddy you wish you had

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  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

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